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mary avatar image
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mary asked Jeanette F commented

How to determine the distribution based on given values

Hello, I want to know which statistical distribution should be used as per the given data below:

MTTR = 5 mins & MTBF = 200 mins

these are the only data i have to determine the distribution, how to choose the distribution?

FlexSim 20.0.10
mtbf mttrbreakdownstatistical distribution
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Jason Lightfoot answered Jason Lightfoot commented

https://en.wikipedia.org/wiki/Failure_rate

If you don't know anything other than observations are independent, then you could use negative exponential. Since this is memoryless, you can also use it for the first observation.

If you know the min and max values then you could try to approximate a shape by reverting to triangular or looking for a distribution by matching shape visually.


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Is negative exponential same for both MTTR and MTBF?


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What do you mean by the same? If you decide to use that for both they will of course be the same type but each will have a different parameter since the means are different (5mins and 20 mins).
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